Work, Force & Energy Worksheet-8

Work, Force & Energy Worksheet-8

Multiple Choice Questions (with more than one option):

12. Mark the different parts of a lever.

(A) Fulcrum                (B) Rod                        (C) Load           

(D) Effort                     (E) None of these

13. True/False

a.      The pointed end of a needle is an example of pulley.

b.      When force is applied in the opposite direction of moving object it can stop an object.

c.      Frictional force can slow down the movement of an object and even stop the moving object.

d.      Movement of vehicles on the road is possible due to frictional force.

e.      A pair of scissor is an example of class-2 lever.

f.       A nut-cracker is an example of class-1 lever.

Fill in the blanks:

14. The force that attracts object to the centre of the Earth is known as ___.
15. Any tool/s which make/s our work easier by helping us to overcome a larger force by applying lesser force is/are known as ______.

Answer Key:

(12)  (A,C,D)

(13)  a. False; b. True; c. True; d. True; e. False; f. False

(14)  Gravitational force/Gravity

(15)  Machine/Machines